title: [14C]Glucose metabolism in sympathetic ganglia of chicken embryos and in primary cultures of neurons and of other cells from these ganglia.
abstract: Metabolism of [1-14C]glucose and [6-14C]glucose was measured in sympathetic ganglia excised from chicken embryos 12-16 days old and in primary cultures of neurons or nonneurons prepared from these ganglia. Some metabolic rates tended to change with the tissue/medium ratio, so this variable had to be controlled. Less C-6 than C-1 od glucose was put out in CO2 by all three types of preparations, indicating operation of the hexosemonophosphate shunt. The C-6/C-1 ratio was greater for the neuronal cultures and for intact ganglia than for the nonneuronal cultures. The C-6/C-1 ratio for the neurons increased with the amount of tissue added to a given volume of incubation medium, in agreement with previous experiments on embryonic dorsal root ganglia (Larrabee, 1978). Per unit of protein, the output of C-1 of glucose in CO2 was higher in both the neuronal and the nonneural cultures than in intact ganglia, whereas that of C-6 was higher in the neuronal cultures and lower in the nonneuronal ones than in the ganglia. The rates of release in lactate of C-1 and C-6 of glucose were 3-5 times higher from both types of cultures than from intact ganglia. The average rates of incorporation of C-1 and C-6 of glucose into tissue constituents were lower in the cultures than in intact ganglia, significantly so for incorporation of C-6 in the nonneuronal cultures.
mesh_terms: D000818:Animals; D002245:Carbon Dioxide / Q000378:metabolism; D002478:Cells, Cultured; D002642:Chick Embryo; D005728:Ganglia, Sympathetic / Q000166:cytology / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism*; D007773:Lactates / Q000378:metabolism; D019344:Lactic Acid; D009474:Neurons / Q000378:metabolism*; D010428:Pentosephosphates / Q000378:metabolism; D013997:Time Factors
chemical_list: D007773:Lactates; D010428:Pentosephosphates; D002245:Carbon Dioxide; D019344:Lactic Acid; D005947:Glucose